| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 2201.65 | USD | 20251028 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 2200.87 | USD | 20251027 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 2199.41 | USD | 20251024 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 2199.72 | USD | 20251023 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 2198.61 | USD | 20251022 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 2199.35 | USD | 20251021 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 2198.02 | USD | 20251020 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 2198.76 | USD | 20251017 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 2198.17 | USD | 20251016 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 2197.34 | USD | 20251015 |